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  <h1 class="topictitle1">包含RDM盘的备份或恢复任务失败</h1>
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    <h4 class="sectiontitle">现象描述</h4>
    <p>包含RDM盘的虚拟机备份或者恢复时，任务失败。任务详情提示“恢复虚拟机磁盘失败” 或“通知客户端（xxx）完成磁盘（xxx）备份任务失败”。</p>
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    <h4 class="sectiontitle">可能原因</h4>
    <p>包含RDM盘的任务会存在扫盘的动作，当前客户端资源不足可能造成扫盘任务超时，导致备份或恢复任务失败。</p>
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    <h4 class="sectiontitle">处理步骤</h4>
    <ol>
     <li><span>以<strong>root</strong>账号登录客户端所在主机。</span></li>
     <li><span>执行以下命令重启iSCSI服务。</span><p></p><pre class="screen">systemctl restart iscsi.service</pre> <p></p></li>
     <li><span>执行以下命令重启客户端所在主机。</span><p></p><pre class="screen">reboot </pre> <p>如果环境未恢复：</p>
      <ul>
       <li>检查客户端所在主机规格是否满足产品文档中的要求。</li>
       <li>检查客户端所在主机操作系统是否在兼容性列表里。</li>
       <li>检查客户端所在主机是否安装了华为多路径软件，系统自带的多路径软件会存在扫盘超时的问题。</li>
      </ul> <p>以上步骤检查后如果还存在问题，建议尝试使用另外一台客户端所在主机进行备份或恢复任务。</p> <p></p></li>
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